Improvement in running-stitch sewing-machines



UNITED STATES JOHN D. DALE, on ROCHESTER, NEW YORK, AssvIGNon To Huisnr-.1?, A.

' BADGER., AND JOHN H. .DALE, OF SAME PLAGE.

. PATENT OFFICE. i

IMPROVEMENT iN 'RUNNING-stiroH sEwiNG-MAH-lNi-:s

Specification-forming part of Letters Patent No. 44,686, dated October 11, 1864;-

'To all 'whom t may concern:

Be it known that-I, JOHN D. DALE, of Bochester, in the county of Monroe and State of New York, have invented a new and useful Im- .-provement inilupning Stitch Sewing-Machines; and I do hereby declare the following to be a i'ull and accurate description of the same,

j reference being had to the accompanying drawings, making part ot this specification, and to the letters ot' reference marked thereon, same letters referring to like parts in all 'the iigures of said drawings.

. Figure l is a perspective view of my runningstitchsewing-machine. "Fig.2isalongi` tndinal section at the liners A, Fig. 4. Fig. 3 is a back` elevation. Fi'g. 4 is a plan. Fig. 5 is a cross-section at the lineB B,.Fig. 4. Fig. 6 is an inverted View.. Fig. 7 is a cross-section at the line C (l/Fig 4.- Fig. 8 is a combination needle clamp. Fig. 9 is a reciprocating lever.

The nature 'of my invention will be better understood from a description of the construction and inode of operation of the machine..

In the drawings, Fig. l, I is the bed of the machine. V is the clamp to attach it to a table or stand when in use. Z is a tension-spring t'or the purpose of keeping an even tension on the fabric being sewed, and also for guiding 'it` straight to the feed-rollers B B. O is an adjustablegage to govern the width of seam to;

be` sewedl G `is a cloth-guide for the purpose of raising and depressing the clotli above andA below the point et' the needle. -It is h'rnily secured to the leverlt, at the end ot' which lever is a slot, F, as shown in Fig. 2, the back end of the lever R being jointed to the bed W by a pin passing through itat Y, Fig. 6, the other end having aslot, as shown in Fig.9, so formed as to cause the cloth-guide 4Oto remain pertions of the shaft I. Thepinion Li| driven byl the gear-Wheel K.

'B B are two feed-rollers, geared ogether at one end by two equal gears and a the other end terminating in two rollers, whi h thus lrun together. Each otl these rollers ha a groove turned in it near the end, the grooves accu.. rately corresponding, so as to admit the sharp end or point ot" the needle. Theuppcr roller revolves in stationary bearings. The lower ope revolvesin stationary bearings atene end, and atV the otherend it runs in a lyielding bearing. which is attached to the center ot'a spring, S, Fig. 6, which is secured at each end by screws, which are adjustable in such a manner that while the rollers are kept constantly forced toward each otherthe5r are capable ot' adjustment to or from each other, iu accordance with the thickness of fabric to be passed through, the cloth being thus pinched tight enough to pull it onto the point ot' the needle, and at the same time push the needle full of the fabric to be sewed. The upper feed-roller, B, Fig. l, has. at one end the driving gea-r- Wheel M.

In Fig. 3 is shown the quadrant J, for the purpose of keeping the drivin g-wheel Kalways in its relative position to the gear M and the shaft I with either a large or smallpinion.

J is a plate, of suitable metal, made in the shape and form desired, one end having a hole in it to slip onto the shaft X. From that hole is a slot curved in the nrc of a circleand of av size toadmita screw which is screwed into bed W, and .when tightened up will hold the quadrant J firm to the bed W atyany point desired. Y

At a suitable distance between shaft X and slot J is secured a stud-pin, on which the gear K revolves, and when the crunk T, which is secured thereto, is turned (gear Khaving a pinion attached to its inner 'side about oneV fourth its size, which gears into gear'M).tlie` gear` M will perform one revolution for every four revolutions of the crank T, thus making one turn of feed-rollers B B. `liuion L being geared into the driver K, which 'has twice as many teeth as gear L, one tnrnof gear K" cloth-guide (.,ll to make two upward and twe downward motions teycvery turn of crank T,

' and as crank T makes four turns for every one of gear M the machine will make sixteen. stitches to every revolution of feed-roller B B. By substituting sinallerpinions on shaft I I the number ol' stitchesfor arevolution of the feed-roller would be increased, and by putting on a larger pinion the number wouldl be refv duced. Thus it will lbe seen that. by moving the quadrant J up or down itwill accommodate either large or small gear, enabling the machine to perform various classes of workby varying the length of the stitcha valuable result which has been much'sought alter in the j running-'stitchsewing-machine. Indeed, by

reason of its-incapacity to make either a long 'the needle and pushes it back so asto tighten vit".on the needle, and thus preventing anyzaccumul-ation 'of gathering directly under the clainpinglever, allq'winp4 these'partsto perform'fthe'r operation with more certainty, and

attire same time relieving the needleof its liability to' bend, as is it well known that-most l goods, except avery light fabric, will stick on the needle aftera few stitches are pressed/on it.- By this arrangement the sewing-machine will,

sew heavy muslin and the closest kind-of fabri *,and force the needle entirely full without' sticking. 'It is therefore enabled to do a-class of werk that-cannot be done, so far asI am aware, on other running-stitch sewingma chi nes,and with much more'speed. Gis a como 'having an eye at the other.

mon .sewing-needle, pointed .at one end -and E, Fig. 8,-,is a curved le ver,.one'.end working in a hole-made for that purposein bed W. The other end is attached to leverD, near its fulcro m--say three-eighths of an inch, more or.

' less, to snit the required.lift`so as to drop the .point of E directly under the needle'. below the surface of the bed W during the'operation of filling the needle. Then by turning lever D,

throwing its short end down until it comes in contact'with the needle, a completelever-clamp is made, whichygrasps the needle tight enough to prevent its sliding from its place while the f, clothis .drawn od'.

A A' is an adjustable 4needle-stop.

-A/,is aright-,angled piece, being'held to bed i W by a thumbscrew, -it having` a .slot in one side to allowpits bengmovedbackward and while the cloth is being moves gear L twice around, which causes the forward to suit the length of'needle requiredl The part A has two projections or ears that support roller A, and in which it can rock. A peculiar-shaped countersunk hole at one Side of this roller, and near one end, receives the head of the n'eedle,.and there is a thumb-piece at the other end to turn it by. Around it is wrapped or wound apiece of spring-wire, making a spiral spring, so that when .it is relieved it will ily back to its place and form a stopv to prevent the needle from pushing back as the feed-rollers B B push the fabric onthe needle. Then by turning roller A-say one-quarter way laround-it relieves the eye ofl th'eneedle and allows the cloth to be easily stripped off, and

when released it will fly back and secure the eye end of the needle.

struction ot' the machine, I will proceed to describe its operation.

' The material to be sewed is passed under the spring Z, thence through the cloth-guide' (land between thefeed-rollers B B. The needle 6, after being threaded, has its point introduced between the rollers B B and projecting beyond them until it reaches to within a short distanceof the cloth-guide C. (lle-stop AA is moved up until it bears against the eye of the needle. The crank T is then turned until the needle is filled with the fabric being` sewed. The thumb of the right --hand is then, placed .against theleverl D, and

the needle isthus held firm in its place,- Then with a finger ofthe saure hand the-rollerA is turned a quarter-way around in order to liberatefthe eye of the needle, and with the" left hand the cloth is stripped olf the needle. That being done, the operator lets go vthe thumbpiece of A and allows it to' fly back and catch the eye of the needle. The lever D is then turned back, and the machine is then 4ready to perform the same operation over again. Turn 4thecrank, as before, and so on until" the needle has been passed through and through the article to be sewed.

vHaving thus fully describedmy invention, what 1 claim therein as new, and desire to secure by-Letters Patent, is-

1'. The combination'of the clamping-levers E and D with the rolling needle-stop A A', op-

' eratin g substantially in the manner and for the PUIPQSe set forth.

2. The relief-tooth wheehin combination" with yielding feed-rollers B B and'reciprocating cloth-guide. C, substantially in the manner .and for the. purpose set forth.

.3. The 4manner described, or its equivalent, for clamping and holding a common sewingneedle lirm enough to prevent its slipping pulled oi'.

JOHN D. DALE.

Witnesses:

JOHN H. DALE,-

BM. amm.'

Having endeavored to describe fully the con- Then the nee-4 

